Punching-machsne



(No Model.)

0. I. LITZENBERGER.

PUNCHING MACHINE.

No. 371,772 Patented Oct. 18,1887.

AW 5 D W Qvillwaam XM ihvrrn dra'rns Parana rrrcn.

CALVIN ISAAC LITZENBERGER, OF OATASAUQUA, PENNSYLVANIA.

PUNCHINGHMACHHNE.

SPECIFICATION forming part of Letters Patent No. 371,772, dated October 18, 1887.

Application filed March 14, 1887. Serial No. 230,910. (No modeh) T0 ctZZ whom, it may concern:

Be it known that I, CALVIN Isaac LITZEN- BERGER, a citizen of the United States, resid ing at Catasauqua, in the county of Lehigh and State of Pennsylvania, have invented a new and useful Punching-llIachine, of which the following is a specification.

Figure 1 rep resents a perspective View of the machine complete. Fig. 2 represents a eentral vertical section through the same, showing the arrangement of the working parts.

My invention relates to improvements in punchirig-machines, being especially designed for the use of ll'lflllllftlCttllGlS; and it consists in the novel construction and arrangement of parts hereinafter specified, and particularly designated in the appended claims.

Referring to the drawings bylctters, K desig nates the supporting frame or stand of the machine. The frame K is supported at bottom upon a triangular or other suitable shaped base, J, so that the frame will be sufficiently braced to stand the strain of usage without falling over.

The frame K consists of a main vertical portion or stem, 7r, which bends over at top, forming a projecting portion, WV. Below said part \V, and corresponding therewith, is an upstanding arm or projection, 10, which forms the anvil or impact-plate of the machine, upon which the materialbeing operated upon is supported. The stem k is hollow, as also the portion XV, as shown.

The frame K is preferably made in two similar parts or halves and bolted together, as shown.

\Vithin the hollow interior of frame K are arranged the working parts of the machine. These consist of a pitman or rod, 0, which moves vertically in the part 7c of frame K, be ing suitably guided therein. The lower end of rod 0 is .operated by means of treadle B, which is pivoted on a bolt, t, in a suitable opening in the lower end ot'.frame K, and has its inner end lying beneath and supporting the rod 0, while its outer end is extended and is adapted to be depressed by the foot of the operator, thereby raising rod 0, as is evident.

To insure the quick return of rod 0 to its normal position when the treadle B is released, I employ the coil-spring L, which is placed around the lower end of rod G, being held thereon by a pin, N, and its upper end bears against a shoulder formed on the interior of frame K, as shown. In the upper portionflV, of frame K, and about centrally of the length thereof, is pivoted on a pin, in, in its hollow interior, and near its bottom, the lowest angle of a bell-crank lever, 0, the upper end of the inner arm of which is connected by a link, d, with the upper end of rod 0, so that said lever 6 will be oscillated by the movements of rod 0. The upper endof the outer arm of lever 6 is connected by a1ink,f, with a Vertieally-moving plunger-bloek, A, which recip- 6 roe-ates in suitable guides formedin the upper and lower sides of portion W of the frame. The plunger A is of greater length than the width of portion WV, so that it can be reciprocated vertically without being displaced from its guides. The points of connection of links f and d with plunger A and rod 0, respectively, are about on a line with the pivot m of lever e.

The operation of these devices is as follows: When the rod Gis down, the parts assume about the position shown in Fig. 2 and the plungcrA is raised. Upon depressing treadle B rod 0 is raised, causing the outward oscillation of lever e, and consequentlythe depres- 8 sion of plunger A through link f, as is obvious. Upon the release of treadle B spring L causes the retraction of rod 0, and consequently lever c, and the plungerAis drawn up. It is obvious that by the arrangement of lever c, links f and (Z, and red C, I can obtain a powerful leverage upon plunger A, sufficient to enable the operator to perform very heavy work with the machine with little labor.

The plunger A is provided in its lower end, 0 below portion W of frame K, with a tapering socket-opening, g, as shown, for the purpose of receiving the different tools used in punching and cutting, and the anvil-arm i0 is provided in its upper face, below plunger A, with 5 a similar socket-opening, ft, by which the different plates and tools for punching and cutting can be secured thereon for operating in. connection with the tool on plunger A.

Having described my invention, what I too claim is- 1. In a punching-machine, the combination of the hollow supporting-frame K with the vertically-reciprocating rod 0, its actuatingtreadle, the plunger A, and the bell-crank lever 6, and links f d, connecting said plunger with rod 0, all constructed and arranged substantially as and for the purpose described.

2. The combination, with the hollow main frame, treadle B, mounted thereon, and the anvil-block w, forming aportion thereof,of the vertical rod 0, reciprocated by treadle B, the bell-crank lever 6, connected thereto by a link, d, and operated thereby, and the plunger A, provided with tool-socket 9, connected to the other arm of lever e byalink, f, and operated thereby, all substantially as and for the purpose described.

3. The combination of the hollow main frame K, having upper horizontal portion,W, anvil portion 10 below the same, and the supporting-base J and the treadie B, inounted on 20 said frame, with the vertical]y-reciprocating rod 0 and its controlling-spring L, the vertically-moving plunger A, having bearings 1n portion W of the main frame, and the bellcrank lever e and linksfd, connecting said 25 plunger with the rod 0, whereby the movement of the rod O actuates the plunger, all constructed and arranged substantially as and in the manner and for the purpose described CALVIN ISAAC LITZENBERGER.

Witnesses:

C. T. HAGEDORN, DAVID MOKENNA, 

